v3.25.2
Note 1 - Business Description and Significant Accounting Policies (Details Textual)
3 Months Ended 6 Months Ended
Aug. 23, 2024
$ / shares
Jun. 30, 2025
USD ($)
$ / shares
Jun. 30, 2024
USD ($)
Jun. 30, 2025
USD ($)
$ / shares
Jun. 30, 2024
USD ($)
Jun. 06, 2025
$ / shares
Dec. 31, 2024
USD ($)
$ / shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.0001 $ 0.0001   $ 0.0001   $ 0.0001 $ 0.0001
Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation   $ 10,795,000 $ 5,858,000 $ 10,795,000 $ 5,858,000   $ 4,965,000
Certificates of Deposit, at Carrying Value   $ 500,000 500,000 500,000 500,000   $ 500,000
Number of Operating Segments   2          
Crypto Asset, Unrealized Gain, Nonoperating   $ 31,000 $ 0 31,000 $ 0    
Crypto Asset, Realized Gain (Loss), Operating and Nonoperating   0   0      
Staked TAO [Member]              
Crypto Asset, Unrealized Gain, Nonoperating       31,000      
Crypto Asset, Fair Value   1,683,000   1,683,000      
Crypto Asset, Staking Activity   $ 2,000   $ 2,000      
G P Communications [Member]              
Subsidiary, Ownership Percentage, Parent   100.00%   100.00%      
Reverse Stock Split [Member]              
Stockholders' Equity Note, Stock Split, Conversion Ratio 40